EPIC - Knative CLI Plugin advancement plan

[treblereel]

Next milestone of KN Workflow CLI plugin. Comprehends:

• [ ] https://github.com/apache/incubator-kie-issues/issues/1337
• [ ] https://github.com/apache/incubator-kie-issues/issues/1336
• [ ] https://github.com/apache/incubator-kie-issues/issues/1335
• [ ] https://github.com/apache/incubator-kie-issues/issues/1334
• [ ] https://github.com/apache/incubator-kie-issues/issues/1333
• [ ] https://github.com/apache/incubator-kie-issues/issues/1324
• [ ] https://github.com/apache/incubator-kie-issues/issues/1299
• [ ] https://github.com/apache/incubator-kie-issues/issues/1360
• [x] https://github.com/apache/incubator-kie-issues/issues/1361